Voltaire said it best

A major obstacle to science is not ignorance but knowledge. (Loehle)

When I struggle to be terse, I end by being obscure. (Horace)
It is a good thing for an uneducated man to read books of quotations. (Churchill)
Trust in Allah, but tie your camel. (Moslem proverb)
To be brief is almost a condition of being inspired. (Santayana)
Ye must have faith. It is a quality which the scientist cannot dispense with. (Planck)

Scientists seem to prefer questionable explanations to no explanation at all. (Rubin)
A theory is a policy rather than a creed. (Thomson)
You've got to do your own growing, no matter how tall your grandfather was. (Italian proverb)
If you speak the truth, have a foot in the stirrup. (Turkish proverb)
No theory is good except on condition that one uses it to go beyond. (Gide)
God never wrought miracle to convince atheism, because his ordinary work convince it. (Bacon)

Probability is the guide of life. (Butler)
Real is what can be measured. (Planck)
Our knowledge is an island in the infinite ocean of the unknown. (Weisskopf)
Value is what you make of it. (Disbrow)
Every word or concept has only a limited range of applicability. (Heisenberg)
Science is nothing but trained and organized common sense. (T.H. Huxley)

No call alligator long mouth till you pass him. (Jamaican proverb)
Only when a scientist becomes a philosopher as well, his work may earn immortality. (van de Voorde)
There is nothing so absurd but some philosopher has said it. (Cicero)
Heresy of one age becomes the orthodoxy of the next. (Keller)
It is easy to be certain. One has only to be sufficiently vague. (Peirce)
Nothing great was ever achieved without enthusiasm. (Emerson)
Good deeds never go unpunished. (American colloquialism)