Nevertheless it is probable that the hearing rather early in life such views maintained and praised may have favoured my upholding them under a different form in my 'Origin of Species.

Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.

It is mere rubbish thinking, at present, of origin of life; one might as well think of origin of matter.

All science would be superfluous if the outward appearance and the essence of things directly coincided.

Science never solves a problem without creating ten more.

Freedom of thought is best promoted by the gradual illumination of men's minds which follows from the advance of science.