"' may be roughly described as quantity motion. A body moving at a speed of say twenty an hour, has a certain quantity…"

"It is a very serious thing to consider that not only the earth itself and all that beautiful face of Nature we see, b…"

"If God holds all mankind guilty for the sin of Adam, if he has visited upon the innocent the punishment of the guilty…"

"We ought not to teach to little children, as a known fact, that which is not a known fact."

"There is in the true man of science a desire stronger than the wish to have his beliefs upheld; namely, the desire to…"

"The name philosopher, which meant originally 'lover of wisdom,' has come in some strange way to mean a man who thinks…"

"Riemann has shewn that as there are different kinds of lines and surfaces, so there are different kinds of space of t…"

"I hold in fact (1) That small portions of space are in fact of a nature analogous to little hills on a surface which …"

"I am endeavouring in a general way to explain the laws of double refraction on this hypothesis, but have not yet arri…"

"Causation is defined by some modern philosophers as unconditional uniformity of succession, e.g., existence of fire f…"