Related:

• Conversation enriches the understanding, but solitude is the school of genius.
• Conversation enriches the understanding, but solitude is the soul of genius.
• Genius is the highest type of reason, talent the highest type of understanding.
• Ditat Deus. (God enriches.)
• The three indispensables of genius are understanding, feeling, and perseverance.
  The three things that enrich genius, are contentment of mind, the cherishing of good thoughts, and exercising the memory....
• Talent, lying in the understanding, is often inhere
  genius, being the action of reason and imagination, rarely or never. -- Samuel Taylor Coleridge...
• Solitude is impractible, and society fatal. -- Emerso
• The worst solitude is to be destitute of sincere friendship.