The search for God is indeed, an entirely personal undertaking.... the most audacious adventure that one can dare.

One must train oneself, by small and frequent efforts, to dominate one's feelings.

The modern city consists of...dark, narrow streets full of gasoline fumes, coal dust, and toxic gasses, torn by the noise.

Intuition comes very close to clairvoyance; it appears to be the extrasensory perception of reality.

Science has to be understood in its broadest sense, as a method for apprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.

Prayer is the force as real as terrestrial gravity. As a physician, I have seen men, after all other therapy had failed, lifted out of disease and melancholy by the serene effort of prayer. Only in prayer do we achieve that complete and harmonious assembly of body, mind and spirit which gives the frail human reed its unshakable strength.

The atmosphere of libraries, lecture rooms and laboratories is dangerous to those who shut themselves up in them too long. It separates us from reality like a fog.