Fernando Pessoa said this quote

I'm astounded whenever I finish something. Astounded and distressed. My perfectionist instinct should inhibit me from finishing: it should inhibit me from even beginning. But I get distracted and start doing something. What I achieve is not the product of an act of my will but of my will's surrender. I begin because I don't have the strength to think, I finish because I don't have the courage to quit. This book is my cowardice.