A proverb meaning that with strong determination you can accomplish anything (where there's a will, there's a way).
コーチは選手たちに『精神一到何事か成らざらん』と声をかけた。
The coach told the players, 'Where there's a will, there's a way.'
古い書物には『精神一到何事か成らざらん』という言葉が見られる。
You can find the phrase '精神一到何事か成らざらん' in old writings.