The one thing more difficult than following a regime is keeping from imposing it on others.

There is probably not one person, however great his virtue, who cannot be led by the complexities of life's circumstances to a familiarity with the vices he condemns the most vehemently--without his completely recognizing this vice which, disguised as certain events, touches him and wounds him: strange words, an inexplicable attitude, on a given night, of the person whom he otherwise has so many reasons to love.

We are less justified in saying that the thinking life of humanity is a miraculous perfectioning of animal and physical life than that it is an imperfection in the organization of spiritual life as rudimentary as the communal existence of protozoa in colonies.

True variety is in that plenitude of real and unexpected elements, in the branch charged with blue flowers thrusting itself, against all expectations, from the springtime hedge which seems already too full, while the purely formal imitation of varietyis but void and uniformity, that is, that which is most opposed to variety.

We do not succeed in changing things according to our desire, but gradually our desire changes. The situation that we hoped to change because it was intolerable becomes unimportant. We have not managed to surmount the obstacle, as we were absolutely determined to do, but life has taken us round it, led us past it, and then if we turn round to gaze at the remote past, we can barely catch sight of it, so imperceptible has it become.

As long as men are free to ask what they must, free to say what they think, free to think what they will, freedom can never be lost and science can never regress.

The past not merely is not fugitive, it remains present.