If we are together nothing is impossible. If we are divided all will fail.
Perfecting and selling your writing is a lifelong task. If you are a persistent writer, you can expect your abilities to improve with time. Success is the ability to go from failure to failure without losing your enthusiasm.
When you are going through hell, don't stop.
Without execution, thinking is mere idleness.
[The politician] is asked to stand, he wants to sit, and he is expected to lie.
Just as the sentence contains one idea in all its fullness, so the paragraph should embrace a distinct episode; and as sentences should follow one another in harmonious sequence, so paragraphs must fit into another like the automatic couplings of railway carriages.