Promising

Definition: having reasonable grounds for hope; likely to succeed or yield favorable results; just expectations of a good outcome

Synonyms: assuring, auspicious, engaging

Quotes:
• Dream lofty dreams, and as you dream, so you shall become. Your vision is the promise of what you shall one day be; your ideal is the prophecy of what you shall at last unveil. — James Allen (1864–1912) British inspirational writer & poet
An almost indispensable skill for any creative person is the ability to pose the right questions. Creative people identify promising, exciting, and, most important, accessible routes to progress – and eventually formulate the questions correctly. — Lisa Randall (1962-) American theoretical physicist