When you say, 'I can’t do that,' you're expressing yourself incorrectly. You should say, 'I couldn’t do that before.'

The only absolute knowledge attainable by man is that life is meaningless.

True science investigates and brings to human perception such truths and such knowledge as the people of a given time and society consider most important. Art transmits these truths from the region of perception to the region of emotion.

If goodness has causes, it is not goodness; if it has effects, a reward, it is not goodness either. So goodness is outside the chain of cause and effect.

I felt a wish never to leave that room - a wish that dawn might never come, that my present frame of mind might never change.

The goal of our life should not be to find joy in marriage, but to bring more love and truth into the world. We marry to assist each other in this task. The most selfish and hateful life of all is that of two beings who unite in order to enjoy life. The highest calling is that of the man who has dedicated his life to serving God and doing good, and who unites with a woman in order to further that purpose.

There are two methods of human activity - and according to which one of these two kinds of activity people mainly follow, are there two kinds of people: One use their reason to learn what is good and what is bad and they act according to this knowledge; the other act as they want to and then they use their reason to prove that that which they did was good and that which they didn't do was bad.