Does my behavior in respect of love affect nothing? That is because there is not enough love in me.

Seek always to do some good, somewhere... Even if it's a little thing, so something for those that need help, something for which you get no pay but the privilege of doing it.

But merely accepting authoritarian truth, even if that truth has some virtue, does not bring skepticism to an end. To blindly accept a truth one has never reflected upon retards the advance of reason. Our world rots in deceit. . . . Just as a tree bears the same fruit year after year and at the same time fruit that is new each year, so must all permanently valuable ideas be continually created anew in thought. But our age pretends to make a sterile tree bear fruit by tying fruits of truth onto its branches.

Within every patient there resides a doctor, and we as physicians are at our best when we we put our patients in touch with the doctor inside themselves.

Let me give you a definition of ethics: It is good to maintain and further life it is bad to damage and destroy life.

Humanitarianism consists in never sacrificing a human being to a purpose.

The deeper we look into nature, the more we recognize that it is full of life, and the more profoundly we know that all life is a secret and that we are united with all life that is in nature.