Where documentary evidence including authenticated receipts, sale agreements, and acknowledgments of debt exist, a court may resolve disputes of fact on the papers without requiring oral evidence, adopting a robust approach. A party claiming cancellation of a contract bears the burden of proving how and when the cancellation was effected and communicated. Where a purchaser has paid the full purchase price for immovable property and the seller retains the title deeds, the purchaser is entitled to specific performance requiring delivery of the title deeds and facilitation of transfer, provided the property remains available for transfer. Documents translated and authenticated by the relevant embassy are to be accorded proper weight absent credible challenge to their authenticity.