Hence no force, however great, can stretch a cord, however fine, into a horizontal line which is accurately straight: there will always be a bending downwards.

The price can't go up in a straight line indefinitely and may need to pause... however, the long-term trend is still up.

The system becomes more coherent as it is further extended. The elements which we require for explaining a new class of facts are already contained in our system. In false theories, the contrary is the case.

We cannot observe external things without some degree of Thought; nor can we reflect upon our Thoughts, without being influenced in the course of our reflection by the Things which we have observed.

An object in motion tends to remain in motion along a straight line unless acted upon by an outside force.

The Lord doesn't always take you in a straight line. He tests you sometimes.