[Those] who have an excessive faith in their theories or in their ideas are not only poorly disposed to make discoveries, but they also make very poor observations.

It is what we know already that often prevents us from learning.

The experimenter who does not know what he is looking for will not understand what he finds.

When we meet a fact which contradicts a prevailing theory, we must accept the fact and abandon the theory, even when the theory is supported by great names and generally accepted.

Man can learn nothing unless he proceeds from the known to the unknown.

The terrain is everything; the germ is nothing.

Art is 'I'; science is 'we'.

A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes.

Those who do not know the torment of the unknown cannot have the joy of discovery.

Science increases our power in proportion as it lowers our pride.

All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.

Its more fun to think of the future than dwell on the past.

Misfortunes make us wise

most people come to know only one corner of their room, one spot near the window, one narrow strip on which they keep walking back and forth.

If you are as happy my dear sir on entering this house as I am in leaving it and returning home you are the happiest man in the country.

If you don't practice you don't deserve to win.

Familiarity is the root of the closest friendships, as well as the interests hatreds.

Avoid activities outdoor. If you like to take an afternoon nap sleep under bed net. So these are measures that can be done to minimize [the] chance of infection [with Zika virus].

Don’t ever stop writing. This is the way the world will find out who you are.

The real leaders of tomorrow are already working on the next big idea, the one that will drive growth into future. They're already far beyond the ideas that created today's results.

Usually if nobody hates a piece, nobody loves it, either; and a magazine which sets itself the goal of provoking thought is not doing its job if everybody agrees with what it does.