As a plant cannot grow without a Seed, similarly no action is possible without a thought.
Depending upon the seed the plant grows. The variety / color / size etc. all depends upon the type of seed. Similarly all our actions depends upon the out thought.
All of us understand this (relation between Seed and Plant) for the natural world, but when it comes to the Human being, we do not. We always tries to 'take the credit for our self and pass the blame to other.' But just like the natural world, all our action wither Spontaneous or Deliberate are the result of our hidden or visual thought.
Act is the blossom of thought, and joy and suffering are its fruits (Act is representation of thought and depending upon your thought, you get the results as fruit)