Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

The great need to grasp principles had caused me to spend most of my time on fruitless persuits.

In a sailboat I become oblivious to everything else in the world.

God did not create evil. Just as darkness is the absence of light, evil is the absence of God.

Epistemology without contact with science becomes an empty scheme. Science without epistemology is-insofar as it is thinkable at all-primitive and muddled.

All means prove but blunt instruments, if they have not behind them a living spirit.

You believe in a God who plays dice, I in complete law and order.