Hertzsprung-Russell diagram

A graph of the absolute magnitude of stars plotted against their surface temperature or color, used in the study of stellar evolution.

[After Ejnar Hertzsprung (1873-1967), Danish astronomer, and Henry Norris Russell.]

Thoughts are fixed in time, ensnared in truth; actions only harden into events. If we cannot undo events, how can we undo thoughts?

In certain countries, a woman who talks too much ceases to be beautiful; ceases to be a jewel.
A madman who makes sense ceases to be innocent.

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