Hard conditions of life are indispensable to bringing out the best in human personality.

Discipline brings us effort, sacrifice and suffering. Later it brings us something of an inestimable value: something of which those who live only for pleasure, profit or amusement will always be deprived. This peculiar indefinable joy which one must have felt oneself to understand is the sign with which life marks its moment of triumph.

Prayer is a cry of distress, a demand for help, a hymn of love.

More than half of all great remedies known to medical history have come from empiricists...'irregulars'...of no or little scientific training. There is no reason to believe that conditions have essentially changed.

When we pray we link ourselves with an inexhaustible motive power.

Those who desire to rise as high as our human condition allows, must renounce intellectual pride, the omnipotence of clear thinking, belief in the absolute power of logic.

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.