No satisfaction based upon self-deception is solid.

Our individual life is brief, and perhaps the whole life of mankind will be brief if measured in astronomical scale

I conclude that, while it is true that science cannot decide questions of value, that is because they cannot be intellectually decided at all, and lie outside the realm of truth and falsehood. Whatever knowledge is attainable, must be attained by scientific methods; and what science cannot discover, mankind cannot know.

Love should be a tree whose roots are deep in the earth, but whose branches extend into heaven.

Both in thought and in feeling, even though time be real, to realise the unimportance of time is the gate of wisdom.

Calculating machines do sums better than even the cleverest people… As arithmetic has grown easier, it has come to be less respected.

Worry is a form of fear, and all forms of fear produce fatigue. A man who has learned not to feel fear will find the fatigue of daily life enormously diminished.