Although I tried to be universal in thought, I am European by instinct and inclination.

It is intelligent to have a plan, but neurotic to fall in love with it.

Overpopulation in various countries has become a serious threat to the health of people and a grave obstacle to any attempt to organise peace on this planet

... a person who is religiously enlightened appears to me to be one who has, to the best of his ability, liberated himself from the fetters of his selfish desires and is preoccupied with thoughts, feelings, and aspirations to which he clings because of their superpersonal value.

You do not really understand something unless you can explain it to your grandmother.

One who scorns the power of intuition will never rise above the ranks of journeyman calculator.

The creative scientist studies nature with the rapt gaze of the lover, and is guided as often by aesthetics as by rational considerations in guessing how nature works.