Those who have learned to walk on the threshold of the unknown worlds, by means of what are commonly termed par excellence the exact sciences, may then, with the fair white wings of imagination, hope to soar further into the unexplored amidst which we live.

I am never so happy as when I am really engaged in good earnest, & it makes me must wonderfully cheerful & merry at other times, which is curious & very satisfactory.

I am much pleased to find how very well I stand work & how my powers of attention & continued effort increase.

Ada Lovelace Quotes