The investigator should have a robust faith - and yet not believe.
The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.
Put off your imagination, as you put off your overcoat, when you enter the laboratory. Put it on again, as you put on your overcoat, when you leave.
It's what we think we know that keeps us from learning.
Art is I, science is we.
