To accomplish great things, we must not only act, but also dream; not only plan, but also believe.

The faculty of doubting is rare among men. A few choice spirits carry the germs of it in them, but these do not develop without training.

It is by acts, and not by ideas, that people ensure the bar down the street cannot have a patio.

Distrust even Mathematics; albeit so sublime and highly perfected, we have here a machine of such delicacy it can only work in vacuo, and one grain of sand in the wheels is enough to put everything out of gear. One shudders to think to what disaster such a grain of sand may bring a Mathematical brain. Remember Pascal.

Unhappiness does make people look stupid.

Of all the ways of defining man, the worst is the one which makes him out to be a rational animal.

Yet, every now and then, there would pass a young girl, slender, fair and desirable, arousing in young men a not ignoble desire to possess her, and stirring in old men regrets for ecstasy not seized and now forever past.