William Rowan Hamilton

I was led, many years ago, to regard Algebra as the Science of Pure Time

Time is said to have only one dimension, and space to have three dimensions. ... The mathematical quaternion partakes of both these elements; in technical language it may be said to be 'time plus space', or 'space plus time': and in this …

To admire is, to me, questionless, the highest pleasure of life.

The Study of Algebra may be pursued in three very different schools, the Practical, the Philological, or the Theoretical, according as Algebra itself is accounted an Instrument, or a Language, or a Contemplation; according as ease of …