Science is nothing but perception.

To know anything well involves a profound sensation of ignorance.

Reason is the enemy of faith.

It is always good to know which ideas cannot be checked directly, but it is not necessary to remove them all. It is not true that we can pursue science completely by using only those concepts which are directly subject to experiment.

Knowledge is love and light and vision.

Listen with the intent to understand, not the intent to reply.

How many things there are concerning which we might well deliberate whether we had better know them.

We account the Scriptures of God to be the most sublime philosophy.

Fear is the mother of morality.

Exaggeration is truth that has lost its temper.

I have nothing new to teach the world. Truth and Non-violence are as old as the hills. All I have done is to try experiments in both on as vast a scale as I could.

One and the same thing can at the same time be good, bad, and indifferent, e.g., music is good to the melancholy, bad to those who mourn, and neither good nor bad to the deaf.

I make preparations both to live and to die every day, but with the emphasis on not dying, and on acting as if I was going to carry on living.

Nothing cannot exist forever.

It is said that the present is pregnant with the future.

To fear love is to fear life, and those who fear life are already three parts dead.

For if there is a sin against life, it consists perhaps not so much in despairing of life as in hoping for another life and in eluding the implacable grandeur of this life.

A sense is what has the power of receiving into itself the sensible forms of things without the matter, in the way in which a piece of wax takes on the impress of a signet-ring without the iron or gold.

Wisdom stands at the turn in the road and calls upon us publicly, but we consider it false and despise its adherents.

If it’s true that our species is alone in the universe, then I’d have to say the universe aimed rather low and settled for very little.

Good men by nature, wish to know. I know that many will call this useless work… men who desire nothing but material riches and are absolutely devoid of that of wisdom, which is the food and only true riches of the mind.

He that does good to another does good also to himself.

He who has a why to live can bear almost any how.

Every person takes the limits of their own field of vision for the limits of the world.

Sometimes I wonder if I’m as famous for my wheelchair and disabilities as I am for my discoveries.

To every action there is always opposed an equal reaction.

The greatness of man is great in that he knows himself to be wretched. A tree does not know itself to be wretched.

Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance.

Thinking is more interesting than knowing, but less interesting than looking.

Sometimes you recognize that there is a category of human experience that has not been identified but everyone knows about it. That is when I find a term to describe it.

Truth is a pathless land.

To abandon oneself to principles is really to die – and to die for an impossible love which is the contrary of love.

The wise are instructed by reason, average minds by experience, the stupid by necessity and the brute by instinct.

Man is not born to atheism. He is born to believe.

When people meet me, they say that I’m really kind – contrary to a lot of my music.

There may not be one Truth – there may be several truths – but saying that is not to say that reality doesn’t exist.

The first lesson a revolutionary must learn is that he is a doomed man.

Life is relationship, living is relationship. We cannot live if you and I have built a wall around ourselves and just peep over that wall occasionally. Unconsciously, deeply, under the wall, we are related.

An investment in knowledge pays the best interest.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

There are men so philosophical that they can see humor in their own toothaches. But there has never lived a man so philosophical that he could see the toothache in his own humor.

The existentialist says at once that man is anguish.

There are very few people who really appreciate my shows. People come to the show and they pay and they enjoy it, but I don’t really think most people really understand what they’ve seen.

When people talk, listen completely. Most people never listen.

Never in any case say I have lost such a thing, but I have returned it. Is your child dead? It is a return. Is your wife dead? It is a return. Are you deprived of your estate? Is not this also a return?

First and last, what is demanded of genius is love of truth.

Knowledge is power.

We have no right to express an opinion until we know all of the answers.

Faith indeed tells what the senses do not tell, but not the contrary of what they see. It is above them and not contrary to them.

It is the greatest of all advantages to enjoy no advantage at all.

The way of the Creative works through change and transformation, so that each thing receives its true nature and destiny and comes into permanent accord with the Great Harmony: this is what furthers and what perseveres.

I grew up with the biologists. I know how they think.

A tomb now suffices him for whom the whole world was not sufficient.

I’m an idealist without illusions.

Things ain’t what they used to be and never were.

The longer I live, the more I feel that true repose consists in ‚renouncing‘ one’s own self, by which I mean making up one’s mind to admit that there is no importance whatever in being ‚happy‘ or ‚unhappy‘ in the usual meaning of the words.

In everything one thing is impossible: rationality.

Man’s unhappiness, as I construe, comes of his greatness; it is because there is an Infinite in him, which with all his cunning he cannot quite bury under the Finite.

Hanging out with politicians and corporations is very unhip work. But I think that the U2 audience have turned out to be incredibly subtle in their understanding.

The greater our knowledge increases the more our ignorance unfolds.

I was never ignorant, as far as being experienced in classrooms and learning about different subjects and actually soaking it up, so I checked into college for a little bit. I took classes at a community college in West L.A. I took psychology, English, and philosophy.