Quote by Robert Boyle
"Certainty in science is a moving target, always receding as we advance."
More from Robert Boyle
"The usefulness of a cupboard were not to be measured by the number of utensils it contained, but by the readiness with which the right instrument could be found and used."
"A man is not to be credited for what he does by constraint and necessity."
"The greater you esteem yourself, the less you will be esteemed by others."
"I have always thought it a very foolish question to ask a man, what he would not do for a considerable sum of money."